Finding the Fourth Proportional to 21,885.26, 30,405.54 and 21,622.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,885.26 : 30,405.54 = 21,622.82 : x
2. Step 2: Convert to fraction form
   21,885.26/30,405.54 = 21,622.82/x
3. Step 3: Cross multiply
   21,885.26x = 30,405.54 × 21,622.82
4. Step 4: Simplify right side
   21,885.26x = 657,453,447.48
5. Step 5: Solve for x
   x = 657,453,447.48/21,885.26
6. Step 6: Final answer
   x = 30,040.93